Which of the following large-scale environmental catastrophes has the least effect on aquatic ecosystems?

a.
oil spills
b.
deforestation
c.
global warming
d.
pollution

What was dr. willem johan kolff’s first step in using the scientific process to invent the hemodialysis machine? he built the machine and tried it with various patients, collecting data about its effectiveness. when a patient’s kidneys failed, he wondered if it would be possible to perform kidney functions with an external machine. he researched and collected data about numerous patients who exhibited symptoms of kidney failure. he drew conclusions from studies of various symptoms of kidney failure, and drew a design for the ideal external blood-processing machine.

How does a lytic infection differ from a lysogenic infection?

15 ! come and answer! a(n) is the general term for an infectious disease that has spread across a city, region, or country.